Lighting unit



May 5, 1925.

W. HARRISON ET AL LIGHTING UNIT Fild Seiaf. 6, 1922 r ,3 1E. my

mum E 3 mmm 7 Tamra A2- roams Patented May 5, 1925.

UNITED STATES PATENT OFFICE,

WARD HARRISON AND JOHN H. WATERBURY, OF CLEVELAND, OHIO, ASSIGNORS TOGENERAL ELECTRIC COMPANY, A CORPORATION OF NEW YORK.

LIGHTING UNIT.

Application filed September 6, 1922.

To all whom. it may concern:

Be it known that we, WARD HARRISON and J OHN H. \VATERBURY, citizens ofthe United States, residing at Cleveland, county of Cuyalioga, State ofOhio, have invented certain new and useful Improvements in LightingUnits, of which the following is a specitication.

Our invention relates to lighting fixtures and more particularly toreflectors and shades for use in connection with electric lamps. Ourinvention is especially adapted for industrial lighting and comprisesthe combination of a reflector with a globe, the

' reflector being ordinarily made of metal and the globe of glass. Theobject of our invention is to obtain an effective distribution of lightin a downward direction so as to satisfactorily illuminate the work uponwhich the operator is engaged and at the same time to rovide anillumination for the ceiling and upper portion of the room so as toavoid the tunnel-like a pearance which is characteristic of many 0 thepresent industrial lighting installations. A further advantage is thatthe intensity of illumination, of the visible light source is made verylow. In other words, our invention gives a very much softer light thanother industrial units. A further advantage is that our device softensshadows and minimizes reflected glare from polished surfaces. A stillfurther advantage is that our invention provides a very rugged 'unitsince the metal reflector, which is preferably used, serves to protectthe glass globe from mechanical breakage and at the same time, theposition of the reflector is such as to prevent glare.

In the drawing, we have shown a unit embodying our invention. Fig. 1 isan elevation of such a unit; Fig. 2 is a partial top plan view; and Fig.3 is a fragmentary elevation ofa modification.

As shown in the drawing, the incandescent lamp 10 is mounted in theusual socket 11. A holder 12 of a type which has been used and whichcomprises the spring fingers 13 and the cover cap 14 engages the upperlip 15 of the metal reflector 16. The said metal reflector is providedwith a collar portion 17 which may be substantially vertical and SerialNo. 586,415.

through which set screws 18 engage the lip 19 at the top of a glassglobe 20 which is preferably integral and which incloses the bowlportion of the incandescent lamp 10 above and below. The metal reflector16 has a number of recesses 21 which are located in a substantiallyhorizontally extending portion 22 and serve to allow light from theglobe 20 to pass upwardly to illuminate the upper portion of the roomand the ceilmg.

In Fig. 3 a modification is shown in which the separate holder 12 forthe metal reflector is dispensed with and the said reflector comprises avertical portion 23, which serves as an attachment means to the support24. the construction otherwise being substantially similar to thatshown'in Fig. 1

\Vhat we claim as new and desire to secure by Letters Patent of theUnited States is:

1. In a lighting unit, the'oombination of a substantially verticallydisposed incandescent lamp and a support therefor, a light diflusingglobe substantially inclosing said lamp and an opaque reflectorpositioned over and partially inclosing said globe, said reflector beingrecessed to allow the transmission of a substantial portion of light insubstantially vertical directions through its upper portion, means forsupporting said reflector and supporting means engaging said globethrough said reflector.

2. In a lighting unit, the combination of a light source, a globeinclosing the same. and a metal reflector positioned over said globe andextending downwardly therearound and substantially to the bottomthereof, and provided with means for allowing the transmission ofasubstantial portion of light through the upper portion thereotithe sameand extending downwardly thereabove said openings to support the saidaround, said reflector being provided with g passages disposed below theupper edge of In wltnesswhereof, we have hereunto set 10 said globe forallowing the transmission of a 0111' bands 31118 1 y Of P 1922- 5substantial portion of light through said reflector and means engagingsaid globe WARD HARRISON. through the portion of the said reflector JOHNH. WATERBURY.

above said openings provided with globe.

our hands this 1 day of Sept. 1922.

substantial portion of light through said reflector and means engagingsaid globe through the portion of the said reflector WARD HARRISON.

DISCLAIMER 1,536,844.Ward Harrison and John H. Waterbury, Cleveland,Ohio. LIGHTING UNIT. Patent dated May 5, 1925. Disclaimer filed December22, 1932, by the assignee, 77w Miller Company. Hereby enters thisdisclaimer to that part of claims 2, 3, and 4 which it does not chooseto claim or hold by virtue of the atent or said assignment, to wit:

The combinations of elements set fortli claims 2, 3, and 4,respectively, of said Letters Patent N 0. 1,536,844, except when theglobe recited in said combinations is a difiusin lobe.

[Qfiic zf Gazette January 17, 1988.]

to support the said JOHN H. WATERBURY.

In witness whereof, we have hereunto set 10 DISCLAIM E R 1,536,844.-WardHarrison and John H. Waterbury, Cleveland, Ohio. LIGHTING UNIT." Patentdated May 5, 1925. Disclaimer filed December 22, 1932, by the assignee,The Miller Company. Hereby enters this disclaimer to that part of claims2, 3, and 4 which it does not choose to claim or hold by virtue of thepatent or said assignment, to Wit:

The combinations of elements set forth in claims 2, 3, and 4,respectively, of said Letters Patent N 0. 1,536,844, except. when theglobe recited in said combinations is a difl'usi lobe.

[0 1551; Gazette January 7, 1983.]

